Oregon-class, United States Navy fast battleship laid down 1921
Displacement:
43,311 t light; 45,561 t standard; 48,062 t normal; 50,064 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(874.33 ft / 850.00 ft) x 99.00 ft (Bulges 114.00 ft) x (31.00 / 32.18 ft)
(266.50 m / 259.08 m) x 30.18 m (Bulges 34.75 m) x (9.45 / 9.81 m)
Armament:
8 - 16.00" / 406 mm 50.0 cal guns - 2,110.00lbs / 957.08kg shells, 120 per gun
Breech loading guns in turret on barbette mounts, 1918 Model
2 x Twin mounts on centreline, forward deck forward
1 raised mount - superfiring
2 x Twin mounts on centreline, aft deck aft
1 raised mount aft - superfiring
14 - 6.00" / 152 mm 53.0 cal guns - 105.01lbs / 47.63kg shells, 200 per gun
Breech loading guns in casemate mounts, 1920 Model
14 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 18,350 lbs / 8,323 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 595.00 ft / 181.36 m 15.00 ft / 4.57 m
Ends: Unarmoured
Main Belt covers 108 % of normal length
- Torpedo Bulkhead - Additional damage containing bulkheads:
2.00" / 51 mm 595.00 ft / 181.36 m 29.10 ft / 8.87 m
Beam between torpedo bulkheads 72.00 ft / 21.95 m
- Hull Bulges:
1.00" / 25 mm 595.00 ft / 181.36 m 29.10 ft / 8.87 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 8.00" / 203 mm 10.0" / 254 mm
2nd: 3.00" / 76 mm - -
- Armoured deck - multiple decks:
For and Aft decks: 6.00" / 152 mm
Forecastle: 1.00" / 25 mm Quarter deck: 1.00" / 25 mm
- Conning towers: Forward 8.00" / 203 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 180,002 shp / 134,282 Kw = 30.88 kts
Range 15,268nm at 10.00 kts
Bunker at max displacement = 4,503 tons
Complement:
1,622 - 2,109
Cost:
£10.869 million / $43.477 million
Distribution of weights at normal displacement:
Armament: 3,410 tons, 7.1 %
- Guns: 3,410 tons, 7.1 %
Armour: 14,963 tons, 31.1 %
- Belts: 4,425 tons, 9.2 %
- Torpedo bulkhead: 1,281 tons, 2.7 %
- Bulges: 641 tons, 1.3 %
- Armament: 2,609 tons, 5.4 %
- Armour Deck: 5,780 tons, 12.0 %
- Conning Tower: 228 tons, 0.5 %
Machinery: 6,198 tons, 12.9 %
Hull, fittings & equipment: 18,740 tons, 39.0 %
Fuel, ammunition & stores: 4,752 tons, 9.9 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
57,350 lbs / 26,014 Kg = 28.0 x 16.0 " / 406 mm shells or 8.9 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 7.7 ft / 2.3 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 45 %
- Recoil effect (Restricted arc if above 1.00): 0.36
Seaboat quality (Average = 1.00): 0.82
Hull form characteristics:
Hull has a flush deck,
a straight bulbous bow and a cruiser stern
Block coefficient (normal/deep): 0.560 / 0.562
Length to Beam Ratio: 7.46 : 1
'Natural speed' for length: 29.15 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 40.00 degrees
Stern overhang: -8.00 ft / -2.44 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 15.00 %, 29.00 ft / 8.84 m, 22.00 ft / 6.71 m
- Forward deck: 30.00 %, 22.00 ft / 6.71 m, 17.50 ft / 5.33 m
- Aft deck: 40.00 %, 17.50 ft / 5.33 m, 17.50 ft / 5.33 m
- Quarter deck: 15.00 %, 17.50 ft / 5.33 m, 20.00 ft / 6.10 m
- Average freeboard: 19.46 ft / 5.93 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 107.2 %
- Above water (accommodation/working, high = better): 128.5 %
Waterplane Area: 59,281 Square feet or 5,507 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 233 lbs/sq ft or 1,137 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.15
- Longitudinal: 0.95
- Overall: 1.00
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather